U.S. shootings heighten security concerns at Republican convention

By Steve Holland and Ginger Gibson CLEVELAND (Reuters) - Cleveland's police union called for the suspension of a state law allowing people to carry firearms during the Republican National Convention but Ohio's governor said he was powerless to act despite heightened security concerns with the killing on Sunday of three police officers in Louisiana. Republican Donald Trump seized on the shooting deaths in Baton Rouge, Louisiana, to bolster his case the United States is leaderless and he is the be